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Internal Friction of Antarctic Mizuho Ice Cores at Low Frequency
https://nipr.repo.nii.ac.jp/records/921
https://nipr.repo.nii.ac.jp/records/92161bd9fb6-5586-416b-8c31-f35aea090534
名前 / ファイル | ライセンス | アクション |
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KJ00000011469 (2.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||||||
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公開日 | 1978-12-01 | |||||||||
タイトル | ||||||||||
言語 | en | |||||||||
タイトル | Internal Friction of Antarctic Mizuho Ice Cores at Low Frequency | |||||||||
言語 | ||||||||||
言語 | eng | |||||||||
資源タイプ | ||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
資源タイプ | departmental bulletin paper | |||||||||
ページ属性 | ||||||||||
内容記述タイプ | Other | |||||||||
内容記述 | P(論文) | |||||||||
著者名(英) |
Nakamura, Tsutomu
× Nakamura, Tsutomu
× Abe, Osamu
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著者所属(英) | ||||||||||
en | ||||||||||
Shinjo Branch, National Research Center for Disaster Prevention | ||||||||||
著者所属(英) | ||||||||||
en | ||||||||||
Shinjo Branch, National Research Center for Disaster Prevention | ||||||||||
抄録(英) | ||||||||||
内容記述タイプ | Other | |||||||||
内容記述 | Internal friction and shear modulus of Antarctic ice cores drilled at Mizuho Station were measured with an inverted torsion pendulum in a frequency range of 4 to 9Hz and a temperature range of 96 to 272K. As a function of temperature, the measured internal friction of every core showed two peaks : One around 265K was considered due to the grain boundary and the other around 150K to the mechanical relaxation, because the internal friction of a single crystal has only one peak around 170K corresponding to the latter peak. The height of the former peak decreased with an increase in the density of the core. The shear modulus decreased very slowly with increase of temperature up to around 253K, where internal friction begins to increase sharply. The decrease of shear modulus was more rapid above that temperature. The shear modulus increased linearly with the density. | |||||||||
雑誌書誌ID | ||||||||||
収録物識別子タイプ | NCID | |||||||||
収録物識別子 | AA00733561 | |||||||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 10, p. 102-113, 発行日 1978-12 |